update for ical create process, new endpoints for frontend

service/ical/ical.go

@@ -3,41 +3,37 @@ package ical
 import (
 	"bytes"
 	"crypto/rand"
+	"encoding/json"
 	"fmt"
 	"github.com/jordic/goics"
 	"github.com/labstack/echo/v5"
 	"github.com/pocketbase/pocketbase"
+	"github.com/pocketbase/pocketbase/apis"
 	"htwk-planner/model"
 	"htwk-planner/service/db"
+	"io"
 	"net/http"
 	"time"
 )
 
 const expirationTime = 5 * time.Minute
 
-var cache = make(map[string]*model.FeedModel)
-
-func FeedURL(c echo.Context, app *pocketbase.PocketBase, course string, semester string) error {
-	token := randomToken(20)
-	_, err := createFeedForToken(app, token, course, semester)
-	if err != nil {
-		return err
-	}
-	return c.JSON(http.StatusOK, fmt.Sprintf("FeedToken: %s, Course: %s, Semester: %s", token, course, semester))
-}
-
 func Feed(c echo.Context, app *pocketbase.PocketBase, token string) error {
+	layout := "2006-01-02 15:04:05 -0700 MST"
 
 	var result string
 	var responseWriter = c.Response().Writer
-	feed, ok := cache[token]
-	if !ok || feed == nil {
-		return c.JSON(http.StatusNotFound, "No FeedModel for this Token")
+	feed, err := db.FindFeedByToken(token, app)
+	if feed == nil && err != nil {
+		return c.JSON(http.StatusNotFound, err)
 	}
 
-	result = feed.Content
-	if feed.ExpiresAt.Before(time.Now()) {
-		newFeed, err := createFeedForToken(app, token, feed.Course, feed.Semester)
+	created, _ := time.Parse(layout, feed.Created)
+
+	var modules []string
+	_ = json.Unmarshal([]byte(feed.Modules), &modules)
+	if created.Add(time.Hour * 265).Before(time.Now()) {
+		newFeed, err := createFeedForToken(app, modules)
 		if err != nil {
 			return c.JSON(http.StatusInternalServerError, err)
 		}
@@ -53,12 +49,11 @@ func Feed(c echo.Context, app *pocketbase.PocketBase, token string) error {
 	return nil
 }
 
-func createFeedForToken(app *pocketbase.PocketBase, token string, course string, semester string) (*model.FeedModel, error) {
-	res := db.GetPlanForCourseAndSemester(app, course, semester)
+func createFeedForToken(app *pocketbase.PocketBase, modules []string) (*model.FeedModel, error) {
+	res := db.GetPlanForModules(app, modules)
 	b := bytes.Buffer{}
 	goics.NewICalEncode(&b).Encode(res)
 	feed := &model.FeedModel{Content: b.String(), ExpiresAt: time.Now().Add(expirationTime)}
-	cache[token] = feed
 	return feed, nil
 }
 
@@ -75,3 +70,34 @@ func writeSuccess(message string, w http.ResponseWriter) {
 	w.WriteHeader(http.StatusOK)
 	w.Write([]byte(message))
 }
+
+func CreateIndividualFeed(c echo.Context, app *pocketbase.PocketBase) error {
+
+	// read json from request body
+	var modules []string
+	requestBodyBytes, err := io.ReadAll(c.Request().Body)
+	if err != nil {
+		return apis.NewApiError(400, "Could not bind request body", err)
+	}
+
+	err = json.Unmarshal(requestBodyBytes, &modules)
+	if err != nil {
+		return apis.NewApiError(400, "Could not bind request body", err)
+	}
+
+	var feed model.Feed
+	jsonModules, _ := json.Marshal(modules)
+	feed.Modules = string(jsonModules)
+
+	collection, dbError := db.FindCollection(app, "feeds")
+	if dbError != nil {
+		return apis.NewNotFoundError("Collection not found", dbError)
+	}
+
+	record, err := db.SaveFeed(feed, collection, app)
+	if err != nil {
+		return apis.NewNotFoundError("Feed could not be saved", dbError)
+	}
+
+	return c.JSON(http.StatusOK, record.Id)
+}